linux-kernel - Re: [PATCH BUGFIX] block, bfq: use pointer entity->sched

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Message-ID: <884a6d3c-40aa-c2a6-9981-82d48148429b@kernel.dk>
Date:   Tue, 9 May 2017 08:53:52 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Paolo Valente <paolo.valente@...aro.org>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        ulf.hansson@...aro.org, linus.walleij@...aro.org,
        broonie@...nel.org
Subject: Re: [PATCH BUGFIX] block, bfq: use pointer entity->sched_data only if
 set

On 05/09/2017 03:37 AM, Paolo Valente wrote:
> In the function __bfq_deactivate_entity, the pointer
> entity->sched_data could happen to be used before being properly
> initialized. This led to a NULL pointer dereference. This commit fixes
> this bug by just using this pointer only where it is safe to do so.

Added, thanks.

-- 
Jens Axboe